methyl 2,3,6-tri-O-benzyl-β-D-glucopyranoside 、
3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl bromide 在
2,4,6-三甲基吡啶 、 3 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
硝基甲烷 为溶剂,
以39%的产率得到methyl 2,3,6-tri-O-benzyl-4-O-(3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl)-β-D-glucopyranoside